The đàn gáo (chữ Nôm: 彈𣂋) ("coconut shell fiddle") is a bowed string instrument, a part of the traditional Vietnamese orchestra.

It can be played alone, as part of an orchestra, or to accompany cải lương (Vietnamese folk opera).

The resonator of the đàn gáo is the coconut shell covered by leather.

There are only two strings for this instrument, and the material is silk, which today can also be substituted with metal.

[2] By gliding the bow along the strings of the đàn gáo, high and full pitched sounds are produced.